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BLSPR (Blue Spring)

Why there are no Arc Hydro features for this map?

There are many springs within the District. The area that contributes recharge to a spring has been defined as the land-surface area wherein water entering the groundwater system as the water table eventually discharges to that spring. Thus the landscape that represents the drainage area for this monitoring point contains no surface water features and, therefore, no Arc Hydro geometric network. A particle tracking method (Shoemaker, et al, 2004) was used to delineate the land-surface area that contributes recharge for Blue Spring in central Florida. This area was then modeled in Arc Hydro by assigning the same Junction-ID to all catchments that were delineated by the particle tracking method (Figure 1), thus, representing groundwater flow from the surface of the landscape and, ultimately, discharging at the spring (location of the BLSPR water quality monitoring site). (Please note that the term “catchment” is used here to simplify the text. The term “catchment” is used by the District to refer to the smallest, vector-based watershed unit available for analysis, not necessarily the smallest possible watershed unit.) For more information about the technology and construction of the District’s Arc Hydro geodatabase, consult the Methodology, Technical Background and Glossary links.

Blue Spring Basin Map

Figure 1. Catchments that supply recharge to Blue Spring

Shoemaker, W. B., A. M. O’Reilly, N. Sepulveda, S. A. Williams, L. H. Motz and Qing Sun. 2004. Comparison of Estimated Areas Contributing Recharge to Selected Springs in North-Central Florida by Using Multiple Groundwater Flow Models. USGS. Tallahassee, FL.


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St. Johns River Water Management District
4049 Reid Street, Palatka, FL 32177
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